CV0-003 · Question #272
Email users report that it takes more than one minute to open emails, including those without attachments. There are three email instances in three different regions hosted by the same CSP. Other…
The correct answer is C. Check the antivirus software settings and disable real-time message scanning. Email slowness affecting all messages, even those without attachments, points to a processing bottleneck at the message level rather than bandwidth or storage. Real-time antivirus scanning on each email open is a common culprit.
Question
Email users report that it takes more than one minute to open emails, including those without attachments. There are three email instances in three different regions hosted by the same CSP. Other applications hosted by the same CSP have no reported issues. Which of the following solutions BEST resolves the issue?
Options
- AConfirm that the email instances have sufficient bandwidth.
- BInstall monitoring software on the email instances.
- CCheck the antivirus software settings and disable real-time message scanning.
- DEnsure the requested IOPS are being provided to the email instances.
How the community answered
(63 responses)- A8% (5)
- B3% (2)
- C73% (46)
- D16% (10)
Why each option
Email slowness affecting all messages, even those without attachments, points to a processing bottleneck at the message level rather than bandwidth or storage. Real-time antivirus scanning on each email open is a common culprit.
Bandwidth issues would typically affect all CSP-hosted applications, not just email, and other applications are reported as working normally.
Installing monitoring software identifies the problem but does not resolve the slowness experienced by users.
Real-time antivirus message scanning intercepts and inspects every email as it is opened, which can introduce delays exceeding one minute per message, especially if scan queues are backed up or signatures are outdated - disabling or tuning this setting directly addresses the reported symptom without changing infrastructure.
IOPS constraints would more likely affect attachment-heavy emails or large mailboxes, not uniformly slow email opens regardless of attachment size.
Concept tested: Antivirus real-time scanning impact on email performance
Source: https://learn.microsoft.com/en-us/microsoft-365/security/defender-endpoint/configure-real-time-protection-microsoft-defender-antivirus
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